Stub preserves-schema plugin

build.rs

@@ -1,5 +1,29 @@
 use preserves_schema::compiler::*;
 
+mod syndicate_plugins {
+    use preserves_schema::compiler::*;
+    use preserves_schema::gen::schema::*;
+    // use preserves_schema::syntax::block::constructors::*;
+
+    #[derive(Debug)]
+    pub(super) struct PatternPlugin;
+
+    impl Plugin for PatternPlugin {
+        fn generate(
+            &self,
+            m: &mut context::ModuleContext,
+            _definition_name: &str,
+            _definition: &Definition,
+        ) {
+            if m.mode.is_some() {
+                return;
+            }
+
+            // TODO: Emit code for building instances of sturdy.Pattern and sturdy.Template
+        }
+    }
+}
+
 fn main() -> std::io::Result<()> {
     let buildroot = std::path::PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
 
@@ -7,6 +31,7 @@ fn main() -> std::io::Result<()> {
     gen_dir.push("src/schemas");
 
     let mut c = CompilerConfig::new(gen_dir, "crate::schemas".to_owned());
+    c.plugins.push(Box::new(syndicate_plugins::PatternPlugin));
     c.module_aliases.insert(vec!["EntityRef".to_owned()], "crate::actor".to_owned());
 
     let inputs = expand_inputs(&vec!["protocols/schema-bundle.bin".to_owned()])?;